Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Common Pitfalls—Inferior TWIs. Example of an ECG with isolated inferior TWIs in leads III and aVF. This ECG is considered normal per the International criteria. Given TWI in III is considered normal, inferior TWI need to be present in both II and aVF to be considered abnormal.
